just opened up the 5T on Sat. morning at 6 like if it was christmas to find out that something leaked in the truck to the bottom of the chassis. Seems like diff oil, since it only appeared at the back of the truck. I read some that diff was dry in some and wondering if thats my case as well. HMMM.. they should make this a kit so I don't have to apart/fix the stuff that shouldhave been done in first place..